CVE-2026-113352 Details
Description
uTox through 0.18.1 contains a path traversal vulnerability that allows Tox friends to write arbitrary files by sending absolute or ../ file names to victims with auto-accept enabled. Attackers can overwrite shell startup files or plant crafted .ftinfo resume records that ft_find_resumeable() loads, abusing FILE pointers to write /proc/self/mem and execute code.
A path traversal vulnerability has been identified in uTox versions through 0.18.1. This vulnerability allows Tox friends to write arbitrary files by sending absolute or relative file paths to victims who have auto-accept enabled for file transfers. Exploitation can lead to overwriting shell startup files or inserting crafted .ftinfo resume records that are loaded by the ft_find_resumeable() function. This abuse of FILE pointers enables writing to /proc/self/mem, potentially executing code in the process.
Users can disable the 'Auto Accept Files' feature to prevent this vulnerability. Additionally, a patch is available in the uTox GitHub repository.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 20, 2026CISA-ADP
Assessed Oct 20, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/uTox/uTox | [email protected] | Vendor |
| https://github.com/uTox/uTox/blob/4b014491560c884b556f082d4d34c5229228bbc5/src/file_transfers.c#L249-L290 | [email protected] | Source CodeVendor |
| https://github.com/uTox/uTox/blob/4b014491560c884b556f082d4d34c5229228bbc5/src/xlib/filesys.c#L191-L214 | [email protected] | Source CodeVendor |
| https://github.com/uTox/uTox/issues/1587 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
| https://github.com/uTox/uTox/pull/1602 | [email protected] | Issue TrackingVendor |
| https://github.com/uTox/uTox/pull/1603 | [email protected] | Issue TrackingVendor |
| https://www.vulncheck.com/advisories/utox-through-0.18.1-path-traversal-via-auto-accepted-file-transfers | [email protected] | AdvisoryBundle |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-22 | Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| uTox | <= 0.18.1 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 20, 2026 | CVE Modified | CISA-ADP |
| Oct 20, 2026 | New CVE Received | [email protected] |